Kaeto
Member
And so someone has chronographed a .44 cal 3" snubnosed revolver using both a weak BP I've not heard of, as well as T7 and the results are more than even I figured when using a more energetic powder:
http://1858remington.com/discuss/index.php?topic=10821.0
Those results seem to also confirm what I was told when I asked a fellow who chopped a revolver quite short and found through his testing that ~3.5" was needed to fully consume a stout powder charge.
Also note how the velocity between a ball and Lee conical with the same powder charge have about the same velocity. Interesting!
The BP you never heard of is used because he lives in Spain.